Barrier / atomic operations on multiprocessors.

Brian Dessent brian@dessent.net
Sat May 27 16:22:00 GMT 2006


Ray Whitmer wrote:

> Is there a generic way to access efficient platform-appropriate memory
> barriers (also compare and swap) in any arbitrary C or C++ program
> compiled under gcc (not just a compiler ordering directive, but
> extending to hardware guarantees)?
> 
> If it is documented somewhere, I apologize.

Well, there's <http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html>.

Brian



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